Suborder:
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Tornoceratina
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Superfamily:
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Prionoceratoidea
|
Family:
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Prionoceratidae
|
Subfamily:
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Acutimitoceratinae
|
Genus:
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Acutimitoceras
|
Subgenus:
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Stockumites
|
Species:
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applanatum |
Qualifier:
|
ss |
Author:
|
Ruan 1981,p.75
|
Lower Boundary:
|
Devonian--Carboniferous Boundary [DCB], 359.2 million years
|
Upper Boundary:
|
low.Tournais.--mid.Tournais. [Tn1--Tn2], 357.5 million years
|